Bowmalloy BOW36334 Hex Head Cap Screw 5/16-24 2-1/4 in Grade 9

Product Description

The BOWMALLOY BOW36334 is a Grade 9 steel hex head cap screw designed for high-strength fastening applications. It features a 5/16-24 unified fine thread and measures 2-1/4 inches under the head with partial threading along the shank. The Bowma-Guard zinc-plated clear chromate finish provides corrosion resistance suited to industrial and mechanical environments. This fastener is installed by mechanical contractors, millwrights, and maintenance technicians working on equipment assemblies that demand fine-thread engagement and elevated tensile strength.

Grade 9 hex head cap screws like the BOW36334 are commonly used in heavy equipment, agricultural machinery, and industrial assemblies where standard Grade 5 or Grade 8 fasteners are insufficient. The fine 5/16-24 thread pitch allows precise torque control and improved resistance to loosening under vibration. Partial threading leaves a smooth shank section that bears shear loads, making this screw suitable for close-tolerance joint applications.

Key Features

• Grade 9 steel construction for high tensile and proof load strength
• 5/16-24 unified fine thread for precise engagement and vibration resistance
• 2-1/4 inch length under head with partial threading along the shank
• Bowma-Guard zinc-plated clear chromate finish for corrosion protection
• Partial threading design supports shear load applications in close-tolerance joints

Compatibility

Designed as a high-strength replacement or service fastener for industrial, agricultural, and heavy equipment assemblies requiring a 5/16-24 fine-thread hex head cap screw with Grade 9 strength ratings.

Installation Notes

Install using an appropriate hex wrench or socket driver sized for a 5/16-24 hex head cap screw. Power down and de-energize any machinery before fastener replacement or maintenance. Follow applicable torque specifications from the equipment manufacturer or relevant ASME B18.2.1 standards for the joint being serviced. Avoid mixing Grade 9 fasteners with lower-grade hardware in the same joint assembly.